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Observability & SRE

Structured logging, metrics, tracing, health checks, and SLO-friendly instrumentation.

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Observability & SRE medium

How to Create a StatsD UDP Metric Mock Server in Python

Run a lightweight mock UDP server that captures StatsD metrics over a short window for local testing.

statsd udp sockets
Python 
import socket
import threading
import time


def start_mock_statsd_server(host="127.0.0.1", port=8125, timeout=3):
    """Run a mock StatsD UDP server that captures metrics for a short window."""
    sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    sock.bind((host, port))
    sock.settimeout(timeout)
    me…
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